Tin Compounds News

The reemergence of organotin in marine hull coatings is of increasing concern, with academics and environmentalists calling on International Maritime Organization (IMO) to investigate the use of tin in silicone-based foul release systems and other ships hull coatings. While use of the organotin tributyltin (TBT) was outlawed as an active biocide almost 10 years ago, the IMO is claimed to “have left the door open” for tin as a catalyst, but according to some academics the amount of organotin used suggests it could be acting as the active agent. Dr.

With TBT paints on the endangered list due to environmental concerns, shipowners must find an alternative method to keep ships coated and efficiently clean. Jotun believes it has the answer. Bringing her first cargo to Europe following completion by Samsung Heavy Industries, the 306,000-dwt British Pioneer has given new expression to environmental-consciousness in the crude oil transportation sector. While the security of her 2.1-million barrel cargo containment has been enhanced by the compulsory double hulling, the non-mandatory continuation of the double shell aft better safeguards the bunker spaces, reducing the risk of fuel oil spillage in the event of the aftship being breached.

In extending its adherence to delivering cost-efficient and safety driven technologies, DNV has introduced a new means of quickly and accurately determining steel thickness can speed ship surveys. It is especially valuable in inspecting old and corroded steelwork. Present-day methods, based on ultrasonic thickness measurements, are said to have dubious reliability on heavily corroded plates, and for large vessels are also considered too slow. The basic technological challenge was to transmit 100 percent of the signal energy through corroded steel plates, and receive and interpret the reflected signal to give an accurate thickness measurement. The basic principles of the new measuring method (half-wave resonance) have been known for 40 years.

Bringing her first cargo to Europe following completion by Samsung Heavy Industries, the 306,000-dwt British Pioneer has given new expression to environmental-consciousness in the crude oil transportation sector. While the security of her 2.1-million barrel cargo containment has been enhanced by the compulsory double hulling, the non-mandatory continuation of the double shell aft better safeguards the bunker spaces, reducing the risk of fuel oil spillage in the event of the aftship being breached. In addition, her potential impact on marine life has been lessened through the adoption of a newly unveiled, tin-free antifouling. Although it currently comes at a very substantial price-per-liter premium…